The vm was shutdown and migrated using vcenter from one cluster to another.
Moved it back the same way.
Checked the ovf environment and it looks ok, at least nothing missing or incorrect.
This does bring up an issue as to What is the method of moving this appliance? I do need to move this appliance to a new cluster without recreating the whole thing.
Secondary to this, I am planning to replace the virtual center which I assume will destroy the ovf environment as well, if so how do I recover it without having to rebuild everything?